<div class="container">
    <div #blockly class="blockly"></div>
    <pre #code class="code prettyprint linenums lang-js"></pre>
</div>
<i class="play" nz-icon nzType="play-square" (click)="play()"></i>
<i class="close" nz-icon nzType="close" (click)="close()"></i>